Tractor scraper



H. TONJES, JR

Jan. 3, 1933.

TRACTOR SCRAPER Filed June 19, 1931 2 Sheets-Sheet l Inventor Jan. 3,1933. H. TONJES, JR 1,892,817

TRACTOR SGRAPER Filed June 19, 1931 2 Sheets-Sheet 2 1E9; An object ofthis invention is toprovide spring in the form of a U-shaped bracket- 16co Patented Jan. 3, 1933 UNITED STATES PATENT orricr.

HENRY TONJES, JR-., OF WISNEE, NEBRASKA 'rnacron scnarnn ApplicationfiledJune 19, 1931. Serial No. 545,594.

This invention relates generally to an imsame means as indicated atwhich secures proved and novel tractor wheel scraper, and the plate 9 isan angle bracket 11. Secured particularly to a scraper of this typewhich to th horizontal flange of the angle bracket may be attached toexisting parts of the by means of bolts or the like 12 is horitractorand which is constructed to autozcntally disposed U-shaped hinge bracket13 matically trip and move out of operation which has its bighteXpandedas at 1-1 to form upon striking an unusual obstruction on the ajournal fora wooden hinge pin'15. v tractor wheel, whereby to preventbending or To the upper end oi the plate 9 and extenddestruction of thescraper. ing rearwardly in a horizontal position is a a simple andeasily installed device of the secured by a bolt or'the like 17 passingcharacter described which is-not only simple through the slot 18thereinand through the and effective in operation, but which is low l t9, B twe th U-shaped bracket 16 in cost of manufacture, and is notlikely to d th l t 9 i cu d b th uri get out of order. means 17 aV-shaped spring 19 and disposed t is 0 2111 ohlect of this invention asshown in Figure Gandthe remainingfig provide a device of the characterdescribed ures of the dr i I Th b k t 16 h which may be attached to anexisting fender it l li htly di i t dly as associated with a tractorWheel. shown in Fig. 5. -31 ThQSe and other Objects of the invention Thehinge bracket 13is cut away as seen its nature, its composition,arrangement and i Fi 7 t 20, d b t th ti combination of parts will bereadily under- 21 th t d 5 i f fl fl Spaced stood by anyone a qu d Withthe art to arms 22 is carried oh the pin 15. The lower which thisinvention relates upon consulting d f th arms 22 are angularly t as i Ithe following description of the drawings in dicated at 23, and providedwith transverse 1: Wheel.

which: holes 24 to receive an adjustable bolt 25 pro- Figure 1 is ageneral Side elevfhtiohal 719W ected ther-ethrough and through theelonof the delich of the ihlehtioh shown in P gated eye 26 of a pivotbracket 27 secured at hl'ht'ive posit-i011 associated With a tractor anon-central portion upon the rearward face 7 of the elongated scraperbar generally des- Elghhe 2 ah elevahlohal VleW taken from ignated 28which is adapted to be swung into the left of Flghre Y a position tohave its lower end portion 29 Figure 3 is View Shhihll to g e 1 inscraping contact between the ground enexceptthat a cross section istaken through gagingmembers 6 7 f th h l 5 i hi 35 h Wheel h the deviceis shown in p position the longer upper portion 30 thereof p h is in arearward and upward position shown Flghre 4 1S a VleW 5111111? to g 3 inFigure 1. In this position the upward h the hl completely pp OM01 endportion 30 is springedly and frictionp phslhlohally held between thearms of the U-shaped 4;) Figures 5, 6 and 7 are perspective detailsSpring 16 Th t i f th Spring 19 of the Parts of the of theihvehtiohpositions the scraper bar 28 in either the Referring in detaito the drawings, h wheel engaging position shown in Figure 1,

numeral 5 generally designates a convention- 011 in the free andinoperative position shown a-l tractor drive wheel having thetransversein Figure 3. The depending tongue20a on i ly spaced groundengaging members 6 and he portion 20 of the bracket 13 limits the 7.Over the wheel in a conventional manner swingot the arms 22 toward thewheel 5, and is disposed the tender 8, and to the lower consequent y, ofthe scraper, when the defender brace or other rigid member of the viceis tripped upon meeting an unusual obfender 8 is secured an upstandingplate 9. To 'struction on the Wheel.

the back of the tender 8 and secured by the It is believed obvious fromthe drawings,

that should an unusual obstruction contact the lower end of the scraperbar 28, that the double jointed or hinged relationship of the partsdescribed will permit the scraper bar to be swung by the obstruction asthe wheel is rotated, into the completely tripped position shown inFigure 4, whereby the scraper bar is taken out of operationautomatically without damage thereto or to the fender or to any part ofthe tractor.

It is further obvious that as the unusual obstruction is contacted, thelower end of the scraper blade 28 will be carried slightly upwardly.Since the blade when contacted with the wheel in operative position isdisposed at an upward and rearward angle, the effectof the upwardmovement is to swing the hingedmembers 22 to the rear and upwardly alongwith the blade. This movement of the blade and members 22 permits thelower end 29 of the blade to be carried along by the obstruction on thewheel sufiiciently to draw the upper end of the blade from between thearms of the retainer bracket 16.

Of course, freed from the retainer bracket 16 the long upper portion ofthe blade swings downwardly under its own weight to the completelytripped position shown in Figure 4. To restore the blade to theoperative position shown in Figure 1 or the neutral position shown inFigure 3, the upper portion of the blade is manually lifted upwardly andat the same time away from the wheel until it can be entered between thearms of the retainer bracket 16 so as to be frictionally held thereby,and contacted with the spring 19.

Since various modifications of the device described above may occur toanyone acquainted with the art to which this relates, it is to bedefinitely understood that I do not desire to limit the application ofthis invention to the particular modifications set out herein toillustrate the principles hereof, and any change or changes may be madein material and construction and arrangement of parts consistent withthe spirit and scope of the invention.

Having thus described my invention, what I claim as new is:

1. A tractor wheel scraper of the type described comprising a fendermounting adjacent one of the wheels of the tractor, a swingable scraperbar carried by the mounting, friction retaining means on the mountingadapted to be engaged by the upper end of the scraper bar formaintaining the scraper bar in positions in or out of engagement withthe tractor wheel between ground engaging elements thereof, and meansconnecting the scraper bar with said mounting which permit the bar toswing bodily out of its normal sphere of action upon its being contactedand moved by an extraordinary obstacle on the wheel, said frictionretaining means comprising a member having spring arms which are adaptedto be spread by engagement of the scraper bar therebetween whereby thescraper bar is frictionally held.

2. A tractor wheel scraper of the type described comprising a fendermounting adjacent one of the wheels of the tractor, a swingable scraperbar carried by the mounting, friction retaining means on the mountingfor engaging the upper part of the scraper bar for maintaining thescraper bar in positions in or out of engagement with the tractor Wheelbetween the ground engaging elements thereof and arranged to release thescraper bar when the same strikes an unusual obstruction on the wheel,and means connecting the scraper bar with the said mounting whichpermits the bar to swing bodily out of its normal sphere of action uponits being contacted and moved by an ext 'aordinaiy obstacle on thewheel, said scraper bar being swingably carried at a point below itsmiddle so that its upper end will swing downwardly of its own weightwhen released from the friction retaining means.

3. A scraper attachment for a tractor wheel comprising bracket meansadjacent the tractor wheel, pivoted link means depending from thebracket means, a swingable scraper bar pivotally carried by the lowerpart of the link means, said link means being connected to the scraperbar at a point below its center of gravity so that the upper part of thescraper bar will normally overbalance the lower part thereof, a frictionretaining means carried by the bracket means for releasably holding theupper part of the scraper bar when it is placed therein with its lowerend either in or out of engagement with the tractor wheel, whereby uponstriking an unusual obstruction on the tractor wheel the scraper barwill be moved out of engagement with said friction retaining means sothat its upper part will ove-rbalance and fall and carry the lowerpartof the scraper bar out of engagement with the tractor wheel.

In testimony whereof I afiix my signature.

HENRY TONJES, Jn.

